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Modular content aggregation engine built with Next.js 15 & TypeScript. Features cross-domain API orchestration, Redux state persistence, and a multi-tier testing suite (Unit, Integration, E2E). Engineered for scalability and high performance

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Yeshwanth-kr/modular-data-aggregator

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Personalized Data Aggregation & Analytics Dashboard

📌 Overview

A production-grade content dashboard that orchestrates multiple external data streams (News, Media, User Analytics) into a unified, high-performance interface. The platform focuses on modularity, state persistence, and robust error handling to ensure a seamless user experience.

🏗 Engineering Architecture

  • Frontend Framework: Next.js 15 (App Router) for Server-Side Rendering (SSR) and optimized hydration.
  • State Orchestration: Redux Toolkit for complex state management and local storage persistence for zero-latency user session recovery.
  • Testing Strategy:
    • Unit: Jest for core utility logic (debouncing, data parsing).
    • Integration: React Testing Library for component lifecycle and state interaction validation.
    • E2E: Cypress for critical path user journey testing (Search -> Filter -> Favorite).

🚀 Key Technical Features

  • Cross-Domain Data Orchestration: Unified API fetching logic to handle disparate data structures from various providers.
  • Performance Optimization: Implemented debounced search and memoized component rendering to prevent unnecessary re-renders during high-frequency user input.
  • Dynamic UI/UX: Leveraged Framer Motion for hardware-accelerated animations and React DnD for intuitive, drag-and-drop content reordering.
  • Resilient Error Handling: Integrated proxy-based API calls to mitigate CORS issues and provide fallback states for failed requests.

🛠 Tech Stack

  • Language: TypeScript (96.3% of codebase)
  • Framework: Next.js, React
  • Styling: Tailwind CSS
  • Persistence: Redux, LocalStorage
  • QA/CI: Jest, Cypress, ESLint

📈 Performance & Quality Metrics

  • Code Quality: 100% Type-safe implementation with TypeScript.
  • Test Coverage: Comprehensive coverage across unit, integration, and end-to-end suites.
  • Accessibility: Optimized for Lighthouse accessibility standards.

🚀 Installation & Testing

git clone https://github.com/Yeshwanth-kr/modular-data-aggregator.git
npm install
npm run dev
npm run test # Run Jest Suite
npx cypress run # Run E2E Suite

Author: Yeshwanth Krishna
Engineering Focus: Modular Architecture & Automated QA

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Modular content aggregation engine built with Next.js 15 & TypeScript. Features cross-domain API orchestration, Redux state persistence, and a multi-tier testing suite (Unit, Integration, E2E). Engineered for scalability and high performance

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